JPH07230272A - Roof mounting structure of upright piano - Google Patents

Abstract

PURPOSE:To prevent noise, resonance, etc., by hinges by fixing the roof of an upright piano to a main body, thereby eliminating the hinges. CONSTITUTION:A girder 19 is provided with internal screw holes 31 at two points of prescribed positions and the roof 1 is provided with through-holes 33 in the positions corresponding to these internal screw holes 31 when the roof is placed on the piano body 10 side. The roof 1 is screwed to the girder 19 by which the roof is attachably and detachably fixed in the case of mounting of the roof on the piano body 19 side by means of external screws 35. The roof 1 is fixed with the external screws 35 according to this roof mounting structure and, therefore, the need for the hinges which are heretofore used to make the roof openable and closable is eliminated and the noise and resonance by the hinges are eliminated. There is no need for the mounting operation and for dividing the roof into two sheets, roof front and roof rear. Production stages are simplified and this structure is advantageous in terms of cost.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an upright piano roof mounting structure.

[0002]

2. Description of the Related Art Conventionally, the roof of an upright piano has been openable. For example, the one shown in FIG. 3 (A) is a case of one roof 101, which is connected to the main body 110 at the rear end 103 by a hinge 113 so that the hinge can be opened upward with the hinge as a fulcrum. Was there. Moreover, what is shown in FIG. 3 (B) is a roof 101a and a roof 1a.
It is divided into 01b, 101a before the roof and 101 after the roof
b was connected by a roof hinge 105. And the main body 1
10 is fixed only to the rear 101b of the roof and 101a in front of the roof
It was made possible to open and stack it on the roof 101b after the roof.

[0003]

However, in the above-mentioned conventional upright piano, the hinges 105 and 113 are used regardless of the type shown in FIG. 3 (A) or (B).
Was used, and noise and resonance were generated by the hinges 105 and 113 during the performance. Of course, the hinges 105 and 113 are also used for the keyboard lid, but the hinges 105 and 113 on the roof are particularly affected because the vibrations of the acoustic members such as the soundboard are directly transmitted. Will end up. Further, opening and closing the keyboard lid is indispensable for playing an upright piano, but in the case of the roof 101, it does not mean that the player cannot play without opening.

Therefore, in order to solve the above problems, the present invention has an attachment structure for fixing the roof to the piano main body, and an object thereof is to eliminate the noise and resonance caused by the hinge without using the hinge.

[0005]

SUMMARY OF THE INVENTION The present invention, which has been accomplished to achieve the above object, is an upright piano roof mounting structure characterized in that a roof is detachably fixed to a piano body. Basically, the place to fix the roof may be any place on the piano body side, but in consideration of the actual situation, as shown in claim 2, for example, a place such as a girder, a strut, a pin plate, or a parent plate with which the roof abuts. Of these, at least one of them may be detachably fixed. It should be noted that at least one of them may be detachably fixed, and of course, a plurality of members may be detachably fixed.
From the viewpoint of strength, it is preferable to use other than the parent board. Further, for example, a felt is attached to a portion of a girder or the like, and a roof is placed on the felt, which is more preferable in terms of measures against resonance.

On the other hand, there are various conceivable fixing means which can be attached and detached. For example, a method of inserting a pin portion into an engaging hole and fixing it by friction, such as screwing with a screw, or a pin portion into a locking hole. There is a method of locking and fixing. Not limited to these methods, any structure can be adopted as long as it can be detachably fixed.

[0007]

According to the roof mounting structure of the upright piano of the present invention, since the roof is fixed, the hinge used for opening and closing as in the past is not necessary, and noise and resonance due to the hinge are eliminated. Can be eliminated.

One of the meanings of the fact that the roof can be opened and closed in the past is to help guide the internal sound to the outside. When the roof is fixed in this way, it opens like the conventional one. There seems to be an acoustical downside to being unable to. However, simply opening a narrow roof does not suddenly clear the muffled sound peculiar to the upright piano, and even if the roof does not open, there is no major acoustical negative. Further, by providing a so-called tone spreader or the like on the upper front plate and the lower front plate, the sound that tends to be muffled has been improved.

Further, this upright type piano is more suitable for general households than the grand type, and it is rare that the roof is always opened when performing in the household, rather a vase or a photo frame is placed on the roof. It is more common to place such items. Therefore, the fact that the roof does not open has no practical negative effects.

By adopting such a structure for fixing the roof in this manner, it is not necessary to attach the roof to the main body by using a hinge as in the prior art, and the conventional roof front and rear roof 2 There is no need to take a separate structure, and the manufacturing process is simplified, which is advantageous in terms of cost.

Further, as the detachable fixing, screwing with a screw, friction between the engaging hole and the pin portion, engagement between the engaging hole and the pin portion, or the like can be detachably fixed. I said I should. What is limited to detachable here is that if it is made non-detachable such as fixing with an adhesive or fixing with nails, for example, part of it may be used for tuning work or internal inspection. This is because if it is not destroyed, it will be inconvenient if the inside cannot be seen. Therefore, by adopting a structure that can be removed relatively easily, consideration is given so as not to interfere with the original management work of the upright piano.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. Here, FIG. 1A is a perspective view showing a schematic configuration of a part of an upright piano having a roof mounting structure. (B) is a schematic sectional view of the same.

For ease of explanation, the roof 1 and the piano body 10 will be described separately. The members on the side of the piano body 10 appearing in FIG. 1 are the left and right parent plates 11, the upper front plate 13 and the frame 15. A pin plate 17 is provided on the rear side of the frame 15.
And columns 19 on both sides of which there are columns 21. In FIG. 1 (A), the felt 23 is attached to the pin plate 17, the girder 19, and the support column 21 and is therefore hidden.

As shown in FIG. 1 (B), a box 25 is arranged below the girder 19, and a girder sticker 27 is fixed to both. In addition to the left and right struts 21, there are several struts between them, all of which extend to the top. In this embodiment, as shown in FIGS.
Female screw holes 31 are provided at two predetermined positions of
Through holes 33 are provided in the roof 1 at positions corresponding to the female screw holes 31 when the roof 1 is mounted on the piano body 10.
Then, the roof 1 is attached to the piano body 10 with the male screw 35.
On the other hand, in this case, the girders 19 are screwed together so that they can be detachably fixed.

According to the roof mounting structure of the upright piano of this embodiment having the above-mentioned structure, since the roof 1 is fixed by the male screw 35, the hinge used to open and close as in the prior art (see FIG. 3), 105 and 113), and noise and resonance due to the hinge can be eliminated.

If, for example, tuning work or internal inspection is desired, the male screw 35 can be removed to remove the roof 1 from the piano body 10 side without damaging the roof 1 or the like. One of the meanings that the roof could be opened and closed in the past,
It can be said that it helps guide the internal sound to the outside, and if the roof 1 is fixed in this way, it cannot be opened as in the conventional case, and there seems to be a negative acoustic side. However, opening the narrow roof 1 does not suddenly clear the muffled sound peculiar to the upright piano, and even if the roof 1 does not open, there is no big acoustical negative. is there. Further, by providing a so-called tone spreader or the like on the upper front plate 13 and the lower front plate (not shown), the sound that tends to be muffled is improved.

By adopting such a structure for fixing the roof 1, it is not necessary to attach the roof 1 to the piano body 10 side using a hinge as in the conventional case shown in FIG.
Further, it is not necessary to take the conventional structure in which the roof 101a and the roof 101b are divided into two as shown in FIG. 3B, and the manufacturing process is simplified, which is advantageous in terms of cost.

The roof 1 can be detachably fixed on any side of the piano body 10, but in reality it is preferable that the roof 1 abuts. Figure 1
In addition to the girder 19 indicated by, other than that, for example, a column 21, a pin plate 17, and a parent plate 11 can be considered. Further, it may be fixed to only one of them, or may be detachably fixed to two or more members.

Further, as the detachable fixing, the screwing by the screw is explained in FIG. 1, but various other methods are conceivable. An example thereof will be described with reference to FIG. As shown in FIG. 2 (A), an engagement hole 51 is provided in the girder 19 and the felt 23 on the girder 19 and the pin portion 53 attached to the roof 1 is inserted into the engagement hole 51, so that the frictional force between the two causes It is a fixed structure. In this case, the shapes of the engagement hole 51 and the pin portion 53 are substantially frustoconical, and the frictional force is increased. The pin portion 53 is made of metal, for example. If it is made of resin or the like, the noise generated when the roof is removed or attached is reduced, and the piano body is less likely to be scratched.

On the other hand, in the structure shown in FIG. 2B, a locking hole 61 is provided in the girder 19 and the felt 23 thereon, and the flanged pin portion 63 attached to the roof 1 is inserted into the locking hole 61. The structure is such that both are locked and fixed by being hooked. The locking hole 61 in this case is provided with a circular hole 61a and a long hole 61b continuously provided on one side thereof, and the width of the long hole 61b is smaller than that of the circular hole 61a. A space larger than the size of the circular hole 61a is provided below the elongated hole 61b. And the shaft 63a of the flanged pin portion 63
Is smaller than the width of the long hole 61b of the locking hole 61,
On the other hand, the diameter of the brim 63b is smaller than the circular hole 61a of the locking hole 61, but larger than the width of the elongated hole 61b.

Therefore, by inserting the flange 63b of the flanged pin portion 63 into the circular hole 61a and shifting the shaft 63a toward the elongated hole 61b, the flanged pin portion 63 is locked in the locking hole 61 and the roof 1 is fixed. Piano body 10 side (in this case digit 1
It will be fixed to 9). In the example of FIG. 2, the engaging hole 51 and the locking hole 61 are provided on the piano body 10 side (specifically, the girder 19 in this case), and the pin portion 53 and the flanged pin portion 63 are provided on the roof 1. However, on the other hand, the engaging hole 5 toward the roof 1
1, the locking hole 61 is provided, and the pin portion 53 is provided on the piano body 10 side.
The same can be done by providing a pin portion 63 with a collar or the like.

In FIG. 1 and FIG. 2, in addition to those screwed together, those by friction between the engagement hole 51 and the pin portion 53, by engagement between the locking hole 61 and the flanged pin portion 63, etc. It has been described that the structure can be fixed as much as possible. What is limited to detachable here is that if a non-detachable fixing such as fixing with an adhesive or fixing with a nail is made, it is possible to remove the piano from the piano during tuning work or internal inspection. This is because it is practically inconvenient if the inside cannot be seen unless the part is destroyed (that is, the roof is removed from the piano body). Therefore, by adopting a detachable fixing structure that can be removed relatively easily, consideration is given so as not to interfere with the original management work of the upright piano.

Although the embodiments have been described above, the present invention is not limited to the above embodiments and can be implemented in various modes. For example, in the embodiment shown in FIG. 1, the roof 1 is placed so as to cover the upper end of the main plate 11, but of course the roof 1 is arranged between the main plates 11. You can use a piano. In that case, screwing and fixing with screws may be performed by providing through holes from the side surface of the main plate 11 and screwing from both sides.

[Brief description of drawings]

FIG. 1A is a perspective view showing a schematic configuration of a part of an upright piano having a roof mounting structure.
(B) is a schematic sectional view of the same.

FIG. 2 is a schematic perspective view showing another embodiment of detachable fixing.

FIG. 3 is a side view showing a conventional roof mounting structure.

[Explanation of symbols]

1 ... Roof, 10 ... Piano body, 11 ... Parent board,
13 ... Upper front plate, 15 ... Frame, 17 ... Pin plate,
19 ... Girder, 21 ... Strut, 23 ... Felt,
25 ... Box, 27 ... Girder sticking, 31 ... Female screw hole, 33 ... Through hole, 51 ... Engaging hole, 53 ... Pin portion, 61 ... Locking hole, 61a ... Circular hole, 61b ... Oblong hole, 63 ... With collar Pin part, 63a ... Shaft, 6
3b ... Tsuba, 101 ... Roof, 101a ... In front of the roof, 1
01b ... After the roof, 105 ... Roof hinge, 110 ... Main body,
113 ... hinge

Claims (2)

[Claims] 1. A roof mounting structure for an upright piano, wherein a roof is detachably fixed to a piano body. 2. The roof mounting structure for an upright piano according to claim 1, wherein the roof is detachably fixed to at least one of a girder, a pillar, a pin plate, and a parent plate. .